Hollow silica spheres with an ordered pore structure and their application in controlled release studies |
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Authors: | Botterhuis Nicole E Sun Qianyao Magusin Pieter C M M van Santen Rutger A Sommerdijk Nico A J M |
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Institution: | Laboratory of Macromolecular and Organic Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands. |
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Abstract: | Herein we report the synthesis and characterization of hollow silica spheres with a narrow size distribution, uniform wall thickness, and a worm-like pore structure. The formation of these spheres was monitored by confocal laser scanning microscopy and dynamic light scattering. A model for the molecular build-up of these silica hollow spheres is derived from these data in combination with studies of the as-made particles by transmission electron microscopy, scanning electron microscopy, pore size analysis, thermogravimetric analysis, and solid-state nuclear magnetic resonance. We further demonstrate that these spheres can be used for the encapsulation and subsequent release of different dye molecules. |
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Keywords: | biomimetic mineralization block copolymers materials science mesoporous materials template synthesis |
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